The mean and variance of 7 observations are 8 and 16, respectively. If five observation are 2, 4, 10, 12, 14 then the absolute difference of the remaining two observations is :
1
2
3
4
81
65
66
78
C.
66
If the minimum and the maximum values of the function
are m and M respectively, then the ordered pair (m, M) = :
( - 4, 4)
( - 4, 0)
(0, 4)
If the volume of a parallelopiped, whose conterminous edges are given by the vectors
n = 7
n = 9